260016321 has 4 divisors (see below), whose sum is σ = 346688432. Its totient is φ = 173344212.

The previous prime is 260016307. The next prime is 260016359. The reversal of 260016321 is 123610062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 260016321 - 2¹¹ = 260014273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260017321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43336051 + ... + 43336056.

It is an arithmetic number, because the mean of its divisors is an integer number (86672108).

Almost surely, 2^260016321 is an apocalyptic number.

It is an amenable number.

260016321 is a deficient number, since it is larger than the sum of its proper divisors (86672111).

260016321 is an equidigital number, since it uses as much as digits as its factorization.

260016321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86672110.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 260016321 is about 16125.0215813809. The cubic root of 260016321 is about 638.2637845877.

Adding to 260016321 its reverse (123610062), we get a palindrome (383626383).

The spelling of 260016321 in words is "two hundred sixty million, sixteen thousand, three hundred twenty-one".